{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the field of electronic evidence preservation?","a":"Immutable records: The blockchain network maintains  a continuous and irreversible record of transactions, which prevents the manipulation or tampering of electronic evidence. This feature ensures that the"}]}],"pr":"aa4bbb18228affe591b9e03886ac59a1daac64ba4548c41acebac13b9ca0afe0"}